Dictionary  nor•nic•o•tinePronunciation: (nôr-nik'u-tēn"), [key] —n. an alkaloid, C9H12N2, extracted from tobacco and related to nicotine but having a lower toxicity: used as an agricultural and horticultural insecticide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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